Honed Firepower

Honed Technique boosts the damage on each instance of Firepower. There are three copies in the deck to find it faster. Helpfully, it is a mental resource that can be used for its own effect or to place a progress counter on Riri in alter-ego. While in AE, exhaust Assault Training to shuffle a copy of Firepower back into the deck.

Ingenuity also easily provides the necessary mental resource for the Honed Technique/Firepower combo. Aggressive Stance finds Firepower when a minion enters play. It is also a mental resource for the combo at the center of this deck. Ironheart is one of the precious few Champion heroes who can use The Locust to find an Aggression attack event.

Exhaust Pulse Grenades to amp up Firepower without losing the damage from Photon Blasters.

And yes, one could include Dive Bomb and/or Pitchback to pair with Honed Technique but that deck design has been done to death and this one focuses on Firepower instead.